Water-softening compound.



UNITED 'sTArEs PATENT OFFICE.

osoaa a summon, or ANN Aaron, MICHIGAN, ASSIGNOR or ONE-HAIFEO WALDEMAB c. KLOTZ, on DETROIT, MICHIGAN,

WATEB-SOFTENING COMPOUND.

R0 Drawing.

To all whom it may co'rwcm:

Be it known that I, OSCAR A. Ennnnacr a citizen of the. United States, and a resi- --dent of Ann Arbor, in ,the count; of Washten'aw and State of Michigan, have avented a new Water-Softening Compound, of'which solv phosphates a the following is a specification.

This invention relates to means for soften ing water for manufacturing and; domestlc uses, principally the latter and. its ObJQCt is to rovide .a com ound, which Wl'w11.5ilS- in waterho ding alkaline earths in solution, will precipitate the 'minerals and thus a soften the water.

It has been found that the phosphates of the alkalies alone will not readily precipitate .t he alkaline earths in solution in water.

Active ammonia compounds give to the eculiar aflinity for lime and magnesiaea rt in solution. It has also been found that certain nonvolatile ammonia compounds, such as sulfate and chlorid,

which normally are inactive for-this pur-- pose, may be rendered active and free by soda-ash. I

Sulfate/of ammonia andsodwash are both extremel stable under normal conditions, but in no presnce-of water, the soda-ash.

renders the am onia active, resulting in a roper alkaline solution which permits al-,

all phosphates to combine more readily with the alkaline earths the water, and

as tr'i-sodium p precipitate them asphosphates of lime and:

ma nesia. i v hefact that lphos hatesof sodium such osp ate 'or di-sodiuimhy drogen-phosphate, sulfateof ammonia and soda-ash are inactive when dry and not-norfl') mally liable:to affect each other, renders the'comoound especially desirable as a mer- Specification of Letters I'ate nt.

Application flied April 17,

. for bathing purposes.

Patented Aug.'29,

1911. I Serial No, 21,559.

charitable water-softener, .as it, can be vended in inexpensive paper boxes. The preferred proportions are substantially tr1- sodium phosp late 75 parts,'.sulfat/e of am monia 8 parts, and soda-ash l7 parts, al though these proportions may be varied to meet parilcular requirements. A teaspoonful 02 1h *ompound will usually render ten gallons medium hard water fit for lailn dry purposes and render twenty gallons fit The amounts used,

may however be varied according to the hardness of the water and the earths in solution. v

Having now explained the composition of the water softener and the use of the same,

what I claim as my invention and desire to secure by Letters Patent is 1 1. A water-softening compound consisting-of a phosphate of an alkaline metal, normally nonvolatile normally a inactive compound of ammonia and means :to render the ammonia compound active when in the presence of water.

2. A water-softening compound consisting of a phosphate of sodium, a non-volatile normally-inactive compound of ammonia,

and sodaash.

3. A water-softening compound consisb.

arts; of; tr1-so'diumphosphate, eight parts 0 sulfate of ammonia, and seventeen parts ofsoda ing ofsubst-antially seventy five ash.

' In testimony whereof I haves'igned this i specification in the presence of two subscribsing witnesses.

Witnesses: i Lmmn G. Srnnn,

Oscm H. Hams.

saf

OSCAR-A. E ERBACH, 

